1st thankie RDC for the reply, mine is the new one w/ mk11 battery. nope i didn't do any mod. and you're right i think the culprit is the left stick.
anyway i think i solved the problem, i just click n hold the left stick and moving it at 1, 12, 11, 10 n 9 o'clock directions and at the same time repeatedly pressing the left d-pad, pop mgs 4 in and move snake to the corner and leave him there so i could sleep.
when I'm awake my ds 3 is still normal. turn it off, and after 5 hors or so, i turned it on again [while i replying your post] ad it still normal

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hey RDC what do you think that causing my ds3 to act like that and if it happen again what should i do?
ps: sorry for my bad english.